I'm trying to make the plugin works couple of weeks ago but

Hello,

I'm trying to make the plugin works couple of weeks ago but it seems not working. I've tried to remove and install again, tried clear cache...

When i send Smush request, it's just display "Ajax request error", then i tried to Smush individually it's display notice "Request failed Site URL not accessible".

Please take a look the screenshot. Also access grannted already.

Thank you,
Tuan.